Cross coupled high frequency buffer

Details Cross coupled high frequency buffer Cross coupled high frequency buffer

2007-07-20

2010-12-28

Nguyen, Duc (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Panoramic display

C455S076000, C455S141000, C455S333000

Reexamination Certificate

active

07860470

ABSTRACT:
A local oscillator (LO) buffer circuit comprises first and second LO buffers arranged in a cross coupled configuration. The first LO buffer generates in-phase output signals in response to in-phase input signals, and quadrature output signals from the second LO buffer. The second LO buffer generates the quadrature output signals in response to quadrature input signals and the in-phase output signals. The LO buffers may include inductive loads. The LO buffers may include MOS transistors or bipolar junction transistors.

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